CEIG: Spanish Computer Graphics Conference

Permanent URI for this community

https://diglib.eg.org/handle/10.2312/893

Browse

Browsing CEIG: Spanish Computer Graphics Conference by Subject "Accessibility systems and tools"

Now showing 1 - 2 of 2
  • Thumbnail Image
    Item
    Adaptation of Interaction Mechanisms in Virtual Reality Shopping Environments for People with Upper Limb Motor Difficulties
    (The Eurographics Association, 2024) Grande, Rubén; Herrera, Vanesa; Glez-Morcillo, Carlos; Reyes, Ana de los; Castro-Schez, José J.; Albusac, Javier; Marco, Julio; Patow, Gustavo; Grande, Rubén|https://orcid.org/0000-0002-0583-6865; Herrera, Vanesa|https://orcid.org/0000-0002-6187-4794; Glez-Morcillo, Carlos|https://orcid.org/0000-0002-8568-9542; Reyes, Ana de los|https://orcid.org/0000-0003-2905-2405; Castro-Schez, José J.|https://orcid.org/0000-0002-0201-7653; Albusac, Javier|https://orcid.org/0000-0003-1889-3065
    In recent years, there has been research and exploration into the development of new shopping experiences within the field of electronic commerce (e-commerce). One of the technologies that can offer a more immersive shopping experience is Virtual Reality (VR). Retail giants such as Amazon and Alibaba Group have begun to use it. The technological advancement of VR, motivated by its use in various domains like e-commerce, has driven the development of software tools like APIs which allow developers to easily develop applications for these devices. One of the latest technologies included in recent VR headsets is hand tracking, which allows users to use their own hands as an input method to interact with the virtual environment. However, software tools for the development of VR applications are not fully adapted to include accessibility options for people with motor difficulties in their bodies, making it very difficult for these people to use this technology with both controllers and hand tracking. To promote accessibility options in the use of VR shopping environments, this study will present the adaptation of a set of interaction mechanisms, among which we highlight: automatic object grabbing, release of grabbed objects, navigation through the environment, attraction of distant objects, and interaction with the shopping cart. These adaptations will be made using Meta's API for Meta Quest devices as a base. The adapted environment has been tested by healthy students from the faculty and one of them with reduced mobility in the left half of his body after suffering a stroke. In this paper, we present the feedback provided by the volunteers, as well as the verification that these interaction mechanisms meet our expectations. This is an essential previous step to carry out a planned experimental session with patients with spinal cord injuries and therapist at the National Hospital for Paraplegics in Toledo (HNPT).
  • Thumbnail Image
    Item
    Dynamic Adjustment of Interactive Objects in Virtual Environments for Upper Limb Rehabilitation: A Patient-Centred Solution
    (The Eurographics Association, 2024) Herrera, Vanesa; Albusac, Javier; Schez-Sobrino, Santiago; Reyes-Guzmán, Ana; Glez-Morcillo, Carlos; Marco, Julio; Patow, Gustavo
    Virtual reality (VR) is a promising technology that offers physical and emotional benefits for traditional rehabilitation. However, interaction with the virtual environment can be an obstacle for patients with reduced mobility, and even more so in the case of VR-based rehabilitation, where the movements required in traditional rehabilitation have to be simulated. This difficulty highlights the need to adapt the virtual environment to the capabilities of each patient. In this study, we present a novel system designed to automatically adjust the positioning of objects within the VR environment. The system, based on data from a previous calibration, is aimed at upper limb rehabilitation, especially in patients with cervical spinal cord injury (cSCI). It incorporates algorithms capable of detecting and relocating virtual objects used in various rehabilitation exercises, ensuring better localisation within the virtual space. The main objective of this system is to improve the effectiveness of rehabilitation treatment, while facilitating adaptation to individual patient needs and exercise characteristics. Preliminary results from a pilot test with healthy subjects are promising and support the efficacy of this system, laying a solid foundation for its implementation in patients with cSCI.